Guided Tour - step 4 of 14

Note the assumptions and constraints

Assumptions are factors considered in planning phase to be true, real, or certain and involve a degree of risk (e.g.: if an activity needs a special equipment, the project manager may assume that it will be available).
Constraints are restrictions that affect the performance of the project. The most popular constraint is the budget, which limits the scope, staffing and schedule.
Both assumptions and constraints are important issues to be considered along the project life.